We demonstrate the first deterministic entanglement of two individually addressed neutral atoms using a Rydberg blockade mediated controlled-NOT gate. Parity oscillation measurements reveal an entanglement fidelity of F=0.58±0.04, which is above the entanglement threshold of F=0.5, without any correction for atom loss, and F=0.71±0.05 after correcting for background collisional losses. The fidelity results are shown to be in good agreement with a detailed error model.
@article{arxiv.1007.0397,
title = {Deterministic entanglement of two neutral atoms via Rydberg blockade},
author = {X. L. Zhang and L. Isenhower and A. T. Gill and T. G. Walker and M. Saffman},
journal= {arXiv preprint arXiv:1007.0397},
year = {2010}
}